The Support of Horizontal Vessels Containing High-Temperature Fluids—A Design Study

1998 ◽  
Vol 120 (3) ◽  
pp. 232-237 ◽  
Author(s):  
A. S. Tooth ◽  
J. S. T. Cheung ◽  
L. S. Ong ◽  
H. W. Ng ◽  
C. Nadarajah
Keyword(s):  
Finite Element ◽  
High Temperature ◽  
Thermal Loading ◽  
Maximum Stress ◽  
Small Displacement ◽  
Finite Element Approach ◽  
Supporting Structure ◽  
Linear Elastic ◽  
Design Charts ◽  
Element Approach

This paper investigates the behavior of horizontal cylindrical vessels, subjected to thermal loading by high-temperature fluid, where the saddles are fixed to the supporting structure. In order to determine an optimum saddle design, three widely used saddle configurations, with differing saddle heights and top saddle plate extensions, are explored. Thereafter, one of the saddle designs is selected to illustrate a decoupling procedure, for the radial and axial expansions, whereby design charts are obtained to derive the maximum stress values for a range of vessel geometries. The finite element approach, using linear elastic, small displacement analysis, is used throughout.

scholarly journals A new multifield finite element method in steady state heat analysis

2005 ◽  
Vol 9 (1) ◽  
pp. 111-130 ◽  
Author(s):  
Dubravka Mijuca ◽  
Ana Ziberna ◽  
Bojan Medjo
Keyword(s):  
Finite Element Method ◽  
Heat Flux ◽  
Finite Element ◽  
Thermal Loading ◽  
Mixed Finite Element ◽  
Finite Element Approach ◽  
Benchmark Tests ◽  
Element Approach ◽  
Steady State Heat ◽  
Solid Bodies

A new original primal-mixed finite element approach and related hexahedral finite element HC:T/q for the analysis of behavior of solid bodies under thermal loading is presented. The essential contributions of the present approach is the treatment of temperature and heat flux as fundamental variables that are simultaneously calculated, as well as capability to introduce initial and prescribed temperature and heal flux. In order to minimize accuracy error and enable introductions afflux constraints, the tensorial character of the present finite element equations is fully respected. The proposed finite element is subjected to some standard benchmark tests in order to test convergence of the results, which enlighten the effectiveness and reliability of the approach proposed.

scholarly journals Investigation of the Stresses and Interaction Effects of Nozzle-Cylinder Intersections When Subject to Multiple External Loads

2019 ◽  
Author(s):  
Murat Bozkurt ◽  
David Nash ◽  
Asraf Uzzaman
Keyword(s):  
Finite Element ◽  
Pressure Vessel ◽  
Maximum Stress ◽  
Suitable Model ◽  
Finite Element Approach ◽  
Cylindrical Pressure Vessel ◽  
Intersection Area ◽  
Element Approach ◽  
External Loads ◽  
Fidelity Model

Abstract Analyzing and solving the problem of practical cylinder-cylinder pressure vessel intersections is challenging when using a finite element approach. Although numerous theoretical and finite element solutions have been developed for the cylinder-cylinder intersection problem, there remains the requirement for an updated, innovative model which takes account of all practical as-fabricated features including fillets and crotch corner ground radii. This study presents the development of a suitable model, based on the results of a parametric macro study, which is able to compare all of these operations on a single, high fidelity model. This study considers a cylindrical pressure vessel with a single nozzle connection without reinforcement plate and examines the maximum stress values in the nozzle-shell intersection area (crotch corner) under the various loads applied to the nozzle. Additionally, internal pressure and external load actions on the nozzle, including effects of circumferential, torsional, and longitudinal moments are compared using a suitable finite element approach. Furthermore, equations and solutions for external loads in spherical and cylindrical shells are given in WRC Bulletins 107 and 537. Therefore, comparisons with the results obtained from these are made for validation purposes and the overall impact of the new as-built approach is presented.

A Finite Element Approach to the Transient Dynamics of Rolling Tires with Emphasis on Rolling Noise Simulation4

2007 ◽  
Vol 35 (3) ◽  
pp. 165-182 ◽  
Author(s):  
Maik Brinkmeier ◽  
Udo Nackenhorst ◽  
Heiner Volk
Keyword(s):  
Finite Element ◽  
Traffic Noise ◽  
Complex Eigenvalue ◽  
Arbitrary Lagrangian Eulerian ◽  
Finite Element Approach ◽  
Road Systems ◽  
Element Approach ◽  
Road Surface Roughness ◽  
Complex Eigenvalue Analysis ◽  
Rolling Noise

Abstract The sound radiating from rolling tires is the most important source of traffic noise in urban regions. In this contribution a detailed finite element approach for the dynamics of tire/road systems is presented with emphasis on rolling noise prediction. The analysis is split into sequential steps, namely, the nonlinear analysis of the stationary rolling problem within an arbitrary Lagrangian Eulerian framework, and a subsequent analysis of the transient dynamic response due to the excitation caused by road surface roughness. Here, a modal superposition approach is employed using complex eigenvalue analysis. Finally, the sound radiation analysis of the rolling tire/road system is performed.

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